CDUS45 KRIW 210732 CLIRIW CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 132 AM MDT MON SEP 21 2026 ................................... ...THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 20 2026... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1995 TO 2026 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 62 4:36 PM 86 2016 72 -10 79 MINIMUM 46 7:16 AM 34 2000 43 3 51 AVERAGE 54 57 -3 65 PRECIPITATION (IN) YESTERDAY 0.57R 0.39 0.04 0.53 0.00 MONTH TO DATE 1.53 0.43 1.10 0.08 SINCE SEP 1 1.53 0.43 1.10 0.08 SINCE JAN 1 4.50 6.79 -2.29 6.33 SNOWFALL (IN) YESTERDAY MM 0.0 2020 0.0 MONTH TO DATE 0.0 0.0 SINCE SEP 1 0.0 0.0 SINCE JUL 1 0.0 0.0 SNOW DEPTH MM DEGREE DAYS HEATING YESTERDAY 11 8 3 0 MONTH TO DATE 41 100 -59 55 SINCE SEP 1 41 100 -59 55 SINCE JUL 1 43 136 -93 58 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 43 28 15 36 SINCE SEP 1 43 28 15 36 SINCE JAN 1 756 496 260 610 ................................................................... WIND (MPH) HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NE (50) HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (70) AVERAGE WIND SPEED 5.5 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.7 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. RAIN LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 97 12:00 AM LOWEST 56 4:00 PM AVERAGE 77 .......................................................... THE RIVERTON WY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 71 84 2001 MINIMUM TEMPERATURE (F) 43 30 2000 SUNRISE AND SUNSET SEPTEMBER 21 2026.....SUNRISE 7:00 AM MDT SUNSET 7:13 PM MDT SEPTEMBER 22 2026.....SUNRISE 7:01 AM MDT SUNSET 7:11 PM MDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$